cvedb.io
CVE-2026-8859
CRITICAL · CVSS 9.9
EPSS exploitation probability: 0%
Published 2026-07-17T20:17:31.643 · Last modified 2026-07-17T20:17:31.643

Summary

IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow an attacker to write arbitrary files to unintended locations due to improper input validation in the APIRequest component. A path traversal vulnerability exists when the "Save to File" feature is enabled, where filenames extracted from HTTP response Content-Disposition headers are not sanitized before being joined to the temporary directory path. An attacker controlling an external HTTP server can supply crafted filename values containing path traversal sequences (e.g., ../), enabling arbitrary file writes to locations accessible by the Langflow process.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.